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Fix unicode re-assignment; MacRomanEncoding detection

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notmasteryet 2012-03-17 23:05:22 -05:00
parent 19b670458e
commit a66b1a7ad3
1 changed files with 26 additions and 30 deletions
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56
src/fonts.js
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@ -174,7 +174,6 @@ var Encodings = {
'', '', 'Lslash', 'Oslash', 'OE', 'ordmasculine', '', '', '', '', '', 'ae',
'', '', '', 'dotlessi', '', '', 'lslash', 'oslash', 'oe', 'germandbls'],
WinAnsiEncoding: ['', '', '', '', '', '', '', '', '', '', '', '', '', '', '',
'', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '',
'space', 'exclam', 'quotedbl', 'numbersign', 'dollar', 'percent',
'ampersand', 'quotesingle', 'parenleft', 'parenright', 'asterisk', 'plus',
@ -1947,12 +1946,22 @@ var Font = (function FontClosure() {
}
// remove glyph references outside range of avaialable glyphs or empty
var glyphsRemoved = 0;
for (var i = ids.length - 1; i >= 0; i--) {
if (ids[i] < numGlyphs &&
(!emptyGlyphIds[ids[i]] || this.isSymbolicFont))
continue;
ids.splice(i, 1);
glyphs.splice(i, 1);
glyphsRemoved++;
}
// heuristics: if removed more than 2 glyphs encoding WinAnsiEncoding
// does not set properly
if (glyphsRemoved > 2) {
warn('Switching TrueType encoding to MacRomanEncoding for ' +
this.name + ' font');
encoding = Encodings.MacRomanEncoding;
}
if (hasShortCmap && this.hasEncoding && !this.isSymbolicFont) {
@ -1992,7 +2001,7 @@ var Font = (function FontClosure() {
reverseMap[glyphs[i].unicode] = i;
}
var backtrackReplacements = [];
var newGlyphUnicodes = [];
for (var i = 0, ii = glyphs.length; i < ii; i++) {
var code = glyphs[i].unicode;
var changeCode = false;
@ -2008,36 +2017,23 @@ var Font = (function FontClosure() {
if (!unicode || reverseMap[unicode] === i)
continue; // unknown glyph name or in its own place
if (unicode in reverseMap) {
backtrackReplacements[unicode] = {
index: i,
code: code,
changeCode: changeCode
};
continue; // its place is taken
}
var index = i;
while (true) {
glyphs[index].unicode = unicode;
reverseMap[unicode] = index;
if (changeCode)
toFontChar[code] = unicode;
// checking if available place can be used by other glyph
var backtrack = backtrackReplacements[code];
if (!backtrack)
break;
delete backtrackReplacements[code];
index = backtrack.index;
code = backtrack.code;
changeCode = backtrack.changeCode;
unicode = code;
}
newGlyphUnicodes[i] = unicode;
if (changeCode)
toFontChar[code] = unicode;
delete reverseMap[code];
}
this.useToFontChar = true;
}
for (var index in newGlyphUnicodes) {
var unicode = newGlyphUnicodes[index];
if (reverseMap[unicode]) {
// avoiding assigning to the same unicode
glyphs[index].unicode = unusedUnicode++;
continue;
}
glyphs[index].unicode = unicode;
reverseMap[unicode] = index;
}
this.useToFontChar = true;
}
// Moving all symbolic font glyphs into 0xF000 - 0xF0FF range.